Chemical rocket
Chemical rocket
A solid rocket engine uses a fuel and an oxidizer. The oxidizer when burned delivers oxygen to the fuel so that it can burn. Most rockets use oxidizers because when the rocket burns it uses so much oxygen that they need a readily available supply.
You need a fuel. You need something that will react or "burn" with it. This is called an oxidizer, even though oxygen is not always what is used. You need a means of forcing the fuel into a combustion chamber. You need a combustion chamber. And you need an exhaust bell for the spent fuel to leave! Some rockets need an igniter, something to set the fuel and oxidizer off. Other rockets use "hypergolic" fuels, which means that the fuel and oxidizer go off just by coming into contact. This is good because not having an igniter means one less thing that can go wrong. The lunar module had this kind of engine. Solid rockets have the fuel and oxidizer mixed together, just waiting to be ignited. The burning fuel hollows the rocket out, forming a sort of combustion chamber.
One of the most advanced rocket engines is the Raptor engine developed by SpaceX. It is a full-flow staged combustion engine that uses liquid methane as fuel and liquid oxygen as oxidizer. The Raptor engine is designed to power the Starship spacecraft for missions to Mars and beyond.
Rockets carry their own oxidizer to burn their fuel in space, as there is no oxygen available in space for combustion. The fuel and oxidizer react together in the rocket engine to produce thrust, allowing the rocket to move forward. This allows rockets to function in the vacuum of space where there is no atmospheric oxygen.
Chemical rocket
Yes, that's correct. Liquid fuel and an oxidizer are burned in the rocket engine's combustion chamber to create high-pressure exhaust gases that are expelled out of the nozzle at high speed, generating thrust that propels the rocket forward.
In internal-combustion engines, the mixing of fuel with air or some other oxidizer within the engine in order to achieve complete and rapid combustion of the fuel.
Most cars use an internal combustion engine or variance thereof to operate. An internal combustion engine works by using combustible fuel, such as fossil fuels, and combining this with a fuel oxidizer. The combination of the two creates high pressure and high temperatures to move different parts of the engine (pistons, turbine blades etc).
Liquid oxygen (LOX) is commonly used as an oxidizer in rocket engines due to its high oxidizing power and high density, which allows for efficient combustion reactions in the engine.
with combustion .. their are 3 componats of combustion -gas - air - and spark .. which creates combustion
a combustion engine is anything that runs on a "combustible fuel" or flammable which creates pressure in the engine to cause it to run. so an answer to your question is combustion engines are used for everything
An external combustion engine is where something is burning outside of the actual engine and the energy is transmitted to the engine via something. (e.g. boiler creates steam that goes to the engine a.k.a. steam engine) In an internal combustion engine, the burning happens in the actual cylinders of the engine. (e.g. car engine)
No, nitrous oxide does not support combustion. In fact, it is used as an oxidizer in racing cars to increase the power output of the engine without increasing the amount of fuel used.
A solid rocket engine uses a fuel and an oxidizer. The oxidizer when burned delivers oxygen to the fuel so that it can burn. Most rockets use oxidizers because when the rocket burns it uses so much oxygen that they need a readily available supply.
That is your standard gasoline engine found in most cars today. Fuel/air mixture is ignited by a timed spark, controlled combustion creates power.
A rocket engine carries its own supply of oxidizer, which provides the oxygen needed for combustion to occur. This allows rockets to operate in the vacuum of space where there is no external source of oxygen.